Tube



Patented May 23,v

UNITED STATES TUBE Leopold Serog, Bielsko, Poland Application January 26, 1938, Serial Y In Poland January 29. 1937 4 Claims.

` 91 by rotating the cap, the .edge of which cuts off the projection. It is therefore necessary to use for the cap sheet-iron or a material, the hardness of which is greater than the hardness of the tubematerial. A

The invention avoids this disadvantage by arranging an eccentric opening in the upper surface of the neck, and a projection on the cap, corresponding to theopening, the lower edge of the cap beingbent inwardly and introduced into a groove of the neck.` 'I'he cap having no cutting eii'ect can be made from the same material as e that forming the tube. In other words vthe cap is formed of a relatively soft material, so that the lower edge of the cap serves as a guidefor rotating the cap, so that no further means is necessary to retain the cap on the neck portion and thus reduce the cost of the closure means of the ltube. i The material of the-cap being thesame as the material of the tube permits the entire contents of the tube to be expelled, as the cap. can be pressed together by fingers. In known tubes such an operation is impossible by reason of the hardness of the cap-material. The material of the cap can be also dierent from the material of the tube. e

`In the annexedJdrawing is shown an example of the tube according the invention.

. Figure 1 shows the tube partly in front elevation and partly in section. Figure 2 is a horizonjtal plan view after removing the cap. Figure 3 45 is a sectional view taken on the line III-min e vFigure 2. Figure 4 is a sectional view taken on "the line IV-IV of Figure 2. lFigure 5 shows the .cap in section before xing the same on the neck. `l'figure 6 is a top plan view of the cap. Figure 7 50 is a plan view ofthe interior of the cap. Figure 8 projection can be removed easily with a knife or e The neck-groove in which is introduced the N9. lsmosn (ci. zal-so) which is introduced the lower edge f of thecap a. The outer surface of the cap is providedwith a projection h, so that after removing the same an opening i in the cap g' is uncovered, corresponding to the opening c. 0n the vinner surface y of the f cap and at lthe corner formed by the skirt d an integral lug Ic is arranged which in rotating the cap -moves on the tapered edge l of the neck. This edge is obliquely cut exceptthe part-em, the-TV length of which being such, that in rotating the 1 cap in one direction the lug k strikes one end of, the part m and the cap stops in a position, in which the opening c is closed. while rotating the cap in the other direction causes thestriking of 4the lug upon the other end of the part m and the l position of the opening i is above the opening c. In the modification according Fig'. 8 a cap formed of material differing from the tube-material is employed. For example the cap may be formed of artificial resin. In this case the end z zo of the cap is provided with an opening n, corresponding to the opening c formed inthe end of the neck a. The opening n is closed by a plate o of tinfoil or the like, the plate being introduced into the cap during production thereof. Into the groove 1' on the inner side of the skirt p of the cap a corresponding rib of the neck may be introduced. In using the tube the plate o can be easily perforated.

I claim:

1. In a collapsible tube. a cylindrical-shaped neck portion extending from the tube, a coverl xed to the neck and having an opening therein eccentricaily arranged `with respect tothe axis of the tube, the outer edge of the neck portion adjacent the cover being tapered and a portion of said edge projecting beyond the tapered surface, a rotatable cap positioned over the cover and having a destructible closed opening therein capable of alignment with theopening inthe cover, a lug carried within the cap and adapted to move along the tapered edge of the neck portion when the cap is rotated; and said lug being so positioned that the two openings are aligned when the lug engages the edge which projects beyond the tapered surface of the 'neck portion.

2. In a collapsible tube, a cylindrical-shaped neck portion extending integrally from the tube,

a cover formed integrally with the neck and having an'openingftherein eccentricaily arranged 50 with respect to the axis of the tube, the major portion of the edge'oflthe neck portion adjacent -the cover being obliquely cut away to provide a stop member of the uncut edge, a rotatable cap positioned over the cover and having a destruc- 4 f tible closed opening therein capable of alignment with the opening of the cover, a lug formed integrally from the cap and adapted to move along the oblique portion of the neck when the cap is rotated, and said lug being so positioned that the two openings are aligned when the lug engages the stop member.-

3. In a collapsible tube, a cylindrical-shaped neck portion extending from the tube, a cover formed integrally with the neck and having a circular opening therein eccentrically arranged with respect to the axis of the tube, the outer edge of the neck portion adjacent the cover being tapered and provided with a. stop member projecting from the tapered edge, a rotatable cap positioned over the cover and having a circular aperture therein capable of alignment with the` opening, a lug formed from an integral part of the cap adapted to move along the tapered edge of the neck portion when the cap is rotated, and

said lug' being so positioned with respect to the aperture that the opening and the aperture are aligned when the lug engages the stop member.

4. A collapsible tube according to claim 1 wherein the cap is formed of articial resin and the destructible opening is closed by tin-foil embeded in the resin.

LEOPOLD SEROG. 

